// 引入connect用于连接UI组件与redux
import { connect } from 'react-redux'
// 引入 action
import {
    createIncrementAction,
    createDecementAction,
    createIncrementAsyncAction
} from '../../redux/actions/count'
import React, { Component } from 'react'

// UI 组件
class Count extends Component {

	//加法
	increment = ()=>{
		const {value} = this.selectNumber
		this.props.jia(value*1)
	}
	//减法
	decrement = ()=>{
		const {value} = this.selectNumber
		this.props.jian(value*1)
	}
	//奇数再加
	incrementIfOdd = ()=>{
		const {value} = this.selectNumber
		if(this.props.count %2 !== 0) {
			this.props.jia(value*1)
		}
	}
	//异步加
	incrementAsync = ()=>{
		const {value} = this.selectNumber
		this.props.jiaAsync(value*1, 500)
	}

	render() {
		return (
			<div>
                <h2>我是Count组件</h2>
				<h4>当前求和为：{this.props.count}</h4>
				<select ref={c => this.selectNumber = c}>
					<option value="1">1</option>
					<option value="2">2</option>
					<option value="3">3</option>
				</select>&nbsp;
				<button onClick={this.increment}>+</button>&nbsp;
				<button onClick={this.decrement}>-</button>&nbsp;
				<button onClick={this.incrementIfOdd}>当前求和为奇数再加</button>&nbsp;
				<button onClick={this.incrementAsync}>异步加</button>&nbsp;
			</div>
		)
	}
}


// 使用connect()()创建并暴露一个Count的容器组件
export default connect(
    state => (
        {
            count: state.count
        }
    ),
    {
        jia: createIncrementAction,
        jian: createDecementAction,
        jiaAsync: createIncrementAsyncAction
    }
    )(Count)

